984089647 has 2 divisors, whose sum is σ = 984089648. Its totient is φ = 984089646.

The previous prime is 984089621. The next prime is 984089677. The reversal of 984089647 is 746980489.

It is a weak prime.

It is an emirp because it is prime and its reverse (746980489) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984089647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984089677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492044823 + 492044824.

It is an arithmetic number, because the mean of its divisors is an integer number (492044824).

Almost surely, 2^984089647 is an apocalyptic number.

984089647 is a deficient number, since it is larger than the sum of its proper divisors (1).

984089647 is an equidigital number, since it uses as much as digits as its factorization.

984089647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 55.

The square root of 984089647 is about 31370.2031711623. The cubic root of 984089647 is about 994.6681711260.

The spelling of 984089647 in words is "nine hundred eighty-four million, eighty-nine thousand, six hundred forty-seven".